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chrome/browser/ui/navigation_correction_tab_observer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_UI_ALTERNATE_ERROR_TAB_OBSERVER_H_
-#define CHROME_BROWSER_UI_ALTERNATE_ERROR_TAB_OBSERVER_H_
+#ifndef CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_
+#define CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_
 
 #include "base/prefs/pref_change_registrar.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
 class Profile;
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
-// Per-tab class to implement alternate error page functionality.
-class AlternateErrorPageTabObserver
+// Per-tab class to implement navigation suggestion service functionality.
+class NavigationCorrectionTabObserver
     : public content::WebContentsObserver,
       public content::NotificationObserver,
-      public content::WebContentsUserData<AlternateErrorPageTabObserver> {
+      public content::WebContentsUserData<NavigationCorrectionTabObserver> {
  public:
-  virtual ~AlternateErrorPageTabObserver();
+  virtual ~NavigationCorrectionTabObserver();
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
  private:
-  explicit AlternateErrorPageTabObserver(content::WebContents* web_contents);
-  friend class content::WebContentsUserData<AlternateErrorPageTabObserver>;
+  explicit NavigationCorrectionTabObserver(content::WebContents* web_contents);
+  friend class content::WebContentsUserData<NavigationCorrectionTabObserver>;
 
   // content::WebContentsObserver overrides:
   virtual void RenderViewCreated(
       content::RenderViewHost* render_view_host) OVERRIDE;
 
   // content::NotificationObserver overrides:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Internal helpers ----------------------------------------------------------
 
-  // Returns the server that can provide alternate error pages.  If the returned
-  // URL is empty, the default error page built into WebKit will be used.
-  GURL GetAlternateErrorPageURL() const;
+  // Returns the URL for the correction service.  If the returned URL
+  // is empty, the default error pages will be used.
+  GURL GetNavigationCorrectionURL() const;
 
-  void OnAlternateErrorPagesEnabledChanged();
+  // Called when navigation corrections are enabled or disabled.
+  void OnEnabledChanged();
 
-  // Send the alternate error page URL to the renderer.
-  void UpdateAlternateErrorPageURL(content::RenderViewHost* rvh);
+  // Updates the renderer's navigation correction service configuration.
+  void UpdateNavigationCorrectionInfo(content::RenderViewHost* rvh);
 
   Profile* profile_;
   content::NotificationRegistrar registrar_;
   PrefChangeRegistrar pref_change_registrar_;
 
-  DISALLOW_COPY_AND_ASSIGN(AlternateErrorPageTabObserver);
+  DISALLOW_COPY_AND_ASSIGN(NavigationCorrectionTabObserver);
 };
 
-#endif  // CHROME_BROWSER_UI_ALTERNATE_ERROR_TAB_OBSERVER_H_
+#endif  // CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_